Game Logic vs UI Logic

The tic-tac-toe project we've been working on requires mastery of two different areas: game logic and UI logic. Game logic, so far, has been incorporated with JAVA and has been how the game runs, in other words. UI logic, or user-interface logic, deals with more of the android code. We need to use xml to code the buttons and textfields the user gets to interact with. We've only been working on this for a while now, since the majority of the six weeks was put into the SQLite which we're moved away from. After learning that SQLite was way later down the road in the android course at UT, we decided we weren't experience enough to handle it. Instead this, tic-tac-toe game is one of the first projects that even the UT professor teaches his own kids.